./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-ticket-4.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-ticket-4.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:01:29,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:01:29,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:01:29,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:01:29,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:01:29,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:01:29,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:01:29,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:01:29,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:01:29,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:01:29,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:01:29,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:01:29,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:01:29,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:01:29,859 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:01:29,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:01:29,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:01:29,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:01:29,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:01:29,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:01:29,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:01:29,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:01:29,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:01:29,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:01:29,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:01:29,861 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:01:29,861 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:01:29,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:01:29,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:01:29,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:01:29,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:01:29,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:01:29,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:01:29,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:01:29,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:01:29,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:01:29,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:01:29,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:01:29,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:01:29,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:01:29,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:01:29,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:01:29,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:01:29,866 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:01:30,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:01:30,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:01:30,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:01:30,136 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:01:30,136 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:01:30,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2024-01-31 17:01:31,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:01:31,263 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:01:31,264 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2024-01-31 17:01:31,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5e2c8372/c9b282124e0d454a9f510330beded6db/FLAGf8f534b6e [2024-01-31 17:01:31,284 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5e2c8372/c9b282124e0d454a9f510330beded6db [2024-01-31 17:01:31,285 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:01:31,286 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:01:31,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-ticket-4.wvr.yml/witness.yml [2024-01-31 17:01:31,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:01:31,415 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:01:31,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:01:31,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:01:31,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:01:31,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:01:31" (1/2) ... [2024-01-31 17:01:31,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed05b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:01:31, skipping insertion in model container [2024-01-31 17:01:31,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:01:31" (1/2) ... [2024-01-31 17:01:31,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6429131a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:01:31, skipping insertion in model container [2024-01-31 17:01:31,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:01:31" (2/2) ... [2024-01-31 17:01:31,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed05b80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31, skipping insertion in model container [2024-01-31 17:01:31,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:01:31" (2/2) ... [2024-01-31 17:01:31,425 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:01:31,462 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:01:31,488 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:01:31,634 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3578,3591] [2024-01-31 17:01:31,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:01:31,653 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:01:31,683 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3578,3591] [2024-01-31 17:01:31,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:01:31,699 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:01:31,699 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31 WrapperNode [2024-01-31 17:01:31,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:01:31,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:01:31,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:01:31,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:01:31,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,738 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2024-01-31 17:01:31,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:01:31,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:01:31,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:01:31,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:01:31,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,750 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,766 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:01:31,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:01:31,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:01:31,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:01:31,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:01:31,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (1/1) ... [2024-01-31 17:01:31,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:01:31,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:31,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:01:31,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:01:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:01:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:01:31,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:01:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:01:31,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:01:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:01:31,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:01:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:01:31,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:01:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:01:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:01:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:01:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:01:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:01:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:01:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:01:31,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:01:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:01:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:01:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:01:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:01:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:01:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:01:31,847 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:01:31,985 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:01:31,988 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:01:32,270 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:01:32,271 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:01:32,505 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:01:32,506 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:01:32,507 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:01:32 BoogieIcfgContainer [2024-01-31 17:01:32,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:01:32,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:01:32,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:01:32,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:01:32,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:01:31" (1/4) ... [2024-01-31 17:01:32,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a277611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:01:32, skipping insertion in model container [2024-01-31 17:01:32,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:01:31" (2/4) ... [2024-01-31 17:01:32,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a277611 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:01:32, skipping insertion in model container [2024-01-31 17:01:32,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:01:31" (3/4) ... [2024-01-31 17:01:32,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a277611 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:01:32, skipping insertion in model container [2024-01-31 17:01:32,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:01:32" (4/4) ... [2024-01-31 17:01:32,515 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2024-01-31 17:01:32,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:01:32,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:01:32,529 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:01:32,578 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 17:01:32,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 124 flow [2024-01-31 17:01:32,649 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2024-01-31 17:01:32,649 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:01:32,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 44 events. 0/44 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 17:01:32,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 124 flow [2024-01-31 17:01:32,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 110 flow [2024-01-31 17:01:32,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:01:32,676 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@458a73a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:01:32,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 17:01:32,696 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:01:32,696 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2024-01-31 17:01:32,697 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:01:32,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:32,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:32,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:32,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -14757495, now seen corresponding path program 1 times [2024-01-31 17:01:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340280099] [2024-01-31 17:01:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:32,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340280099] [2024-01-31 17:01:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340280099] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:33,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:33,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:01:33,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843547332] [2024-01-31 17:01:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:33,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:01:33,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:33,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:01:33,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:01:33,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-01-31 17:01:33,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:33,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:33,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-01-31 17:01:33,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:35,287 INFO L124 PetriNetUnfolderBase]: 16907/23295 cut-off events. [2024-01-31 17:01:35,288 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2024-01-31 17:01:35,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47903 conditions, 23295 events. 16907/23295 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 131578 event pairs, 4310 based on Foata normal form. 1/23268 useless extension candidates. Maximal degree in co-relation 42730. Up to 9585 conditions per place. [2024-01-31 17:01:35,388 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 88 selfloop transitions, 9 changer transitions 30/132 dead transitions. [2024-01-31 17:01:35,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 132 transitions, 581 flow [2024-01-31 17:01:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:01:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:01:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-01-31 17:01:35,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-01-31 17:01:35,399 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 110 flow. Second operand 6 states and 182 transitions. [2024-01-31 17:01:35,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 132 transitions, 581 flow [2024-01-31 17:01:35,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 132 transitions, 539 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 17:01:35,456 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 151 flow [2024-01-31 17:01:35,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-01-31 17:01:35,460 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-01-31 17:01:35,460 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 151 flow [2024-01-31 17:01:35,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:35,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:35,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:35,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:01:35,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:35,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:35,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1293729991, now seen corresponding path program 2 times [2024-01-31 17:01:35,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:35,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566286783] [2024-01-31 17:01:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:35,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:35,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566286783] [2024-01-31 17:01:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566286783] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:35,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:35,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:01:35,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569838904] [2024-01-31 17:01:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:35,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:01:35,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:01:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:01:35,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:35,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:35,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:35,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:35,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:36,552 INFO L124 PetriNetUnfolderBase]: 9434/14526 cut-off events. [2024-01-31 17:01:36,553 INFO L125 PetriNetUnfolderBase]: For 1782/2244 co-relation queries the response was YES. [2024-01-31 17:01:36,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31122 conditions, 14526 events. 9434/14526 cut-off events. For 1782/2244 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 97095 event pairs, 1985 based on Foata normal form. 16/13920 useless extension candidates. Maximal degree in co-relation 31108. Up to 4304 conditions per place. [2024-01-31 17:01:36,651 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 94 selfloop transitions, 33 changer transitions 1/145 dead transitions. [2024-01-31 17:01:36,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 145 transitions, 615 flow [2024-01-31 17:01:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:01:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:01:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 17:01:36,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-01-31 17:01:36,666 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 151 flow. Second operand 7 states and 227 transitions. [2024-01-31 17:01:36,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 145 transitions, 615 flow [2024-01-31 17:01:36,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 145 transitions, 606 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 17:01:36,671 INFO L231 Difference]: Finished difference. Result has 60 places, 77 transitions, 276 flow [2024-01-31 17:01:36,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=77} [2024-01-31 17:01:36,671 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2024-01-31 17:01:36,672 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 77 transitions, 276 flow [2024-01-31 17:01:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:36,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:36,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:36,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:01:36,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:36,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:36,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1652188769, now seen corresponding path program 3 times [2024-01-31 17:01:36,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:36,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983803576] [2024-01-31 17:01:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:36,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:37,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:37,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983803576] [2024-01-31 17:01:37,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983803576] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:37,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:37,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:01:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572470051] [2024-01-31 17:01:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:37,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:01:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:01:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:01:37,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-01-31 17:01:37,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 77 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:37,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:37,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-01-31 17:01:37,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:39,268 INFO L124 PetriNetUnfolderBase]: 23341/32584 cut-off events. [2024-01-31 17:01:39,268 INFO L125 PetriNetUnfolderBase]: For 17859/17859 co-relation queries the response was YES. [2024-01-31 17:01:39,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86314 conditions, 32584 events. 23341/32584 cut-off events. For 17859/17859 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 193753 event pairs, 6287 based on Foata normal form. 2/32543 useless extension candidates. Maximal degree in co-relation 22304. Up to 15953 conditions per place. [2024-01-31 17:01:39,405 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 172 selfloop transitions, 12 changer transitions 30/219 dead transitions. [2024-01-31 17:01:39,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 219 transitions, 1218 flow [2024-01-31 17:01:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:01:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:01:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-01-31 17:01:39,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-01-31 17:01:39,407 INFO L175 Difference]: Start difference. First operand has 60 places, 77 transitions, 276 flow. Second operand 6 states and 180 transitions. [2024-01-31 17:01:39,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 219 transitions, 1218 flow [2024-01-31 17:01:39,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 219 transitions, 1209 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:01:39,453 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 342 flow [2024-01-31 17:01:39,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=67, PETRI_TRANSITIONS=80} [2024-01-31 17:01:39,454 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-01-31 17:01:39,454 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 342 flow [2024-01-31 17:01:39,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:39,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:39,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:39,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:01:39,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:39,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:39,455 INFO L85 PathProgramCache]: Analyzing trace with hash 165651255, now seen corresponding path program 4 times [2024-01-31 17:01:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:39,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924963075] [2024-01-31 17:01:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:39,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924963075] [2024-01-31 17:01:39,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924963075] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:39,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:39,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:01:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284838317] [2024-01-31 17:01:39,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:39,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:01:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:01:39,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:01:39,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:39,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:39,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:39,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:39,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:40,541 INFO L124 PetriNetUnfolderBase]: 9149/13968 cut-off events. [2024-01-31 17:01:40,541 INFO L125 PetriNetUnfolderBase]: For 11483/12839 co-relation queries the response was YES. [2024-01-31 17:01:40,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38370 conditions, 13968 events. 9149/13968 cut-off events. For 11483/12839 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 91798 event pairs, 1673 based on Foata normal form. 98/13572 useless extension candidates. Maximal degree in co-relation 24739. Up to 4277 conditions per place. [2024-01-31 17:01:40,638 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 94 selfloop transitions, 36 changer transitions 1/151 dead transitions. [2024-01-31 17:01:40,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 151 transitions, 778 flow [2024-01-31 17:01:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:01:40,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:01:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 17:01:40,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-01-31 17:01:40,640 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 342 flow. Second operand 7 states and 227 transitions. [2024-01-31 17:01:40,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 151 transitions, 778 flow [2024-01-31 17:01:40,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 727 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-01-31 17:01:40,653 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 383 flow [2024-01-31 17:01:40,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2024-01-31 17:01:40,654 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-01-31 17:01:40,654 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 383 flow [2024-01-31 17:01:40,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:40,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:40,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:40,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:01:40,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:40,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -176851905, now seen corresponding path program 5 times [2024-01-31 17:01:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897006510] [2024-01-31 17:01:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897006510] [2024-01-31 17:01:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897006510] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:40,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:40,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605735463] [2024-01-31 17:01:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:01:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:01:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:01:40,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:40,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:40,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:40,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:40,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:41,891 INFO L124 PetriNetUnfolderBase]: 15206/23374 cut-off events. [2024-01-31 17:01:41,891 INFO L125 PetriNetUnfolderBase]: For 22696/23572 co-relation queries the response was YES. [2024-01-31 17:01:41,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67551 conditions, 23374 events. 15206/23374 cut-off events. For 22696/23572 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 165312 event pairs, 3804 based on Foata normal form. 280/23204 useless extension candidates. Maximal degree in co-relation 19639. Up to 8791 conditions per place. [2024-01-31 17:01:42,075 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 106 selfloop transitions, 48 changer transitions 0/174 dead transitions. [2024-01-31 17:01:42,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 174 transitions, 1069 flow [2024-01-31 17:01:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:01:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:01:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-01-31 17:01:42,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333 [2024-01-31 17:01:42,077 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 383 flow. Second operand 5 states and 173 transitions. [2024-01-31 17:01:42,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 174 transitions, 1069 flow [2024-01-31 17:01:42,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 174 transitions, 943 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:01:42,118 INFO L231 Difference]: Finished difference. Result has 70 places, 118 transitions, 672 flow [2024-01-31 17:01:42,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=70, PETRI_TRANSITIONS=118} [2024-01-31 17:01:42,121 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-01-31 17:01:42,121 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 118 transitions, 672 flow [2024-01-31 17:01:42,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:42,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:42,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:42,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:01:42,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:42,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1764722299, now seen corresponding path program 6 times [2024-01-31 17:01:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462792298] [2024-01-31 17:01:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:42,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:42,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462792298] [2024-01-31 17:01:42,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462792298] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:42,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:42,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:01:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878143280] [2024-01-31 17:01:42,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:01:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:01:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:01:42,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:42,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 118 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:42,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:42,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:42,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:43,984 INFO L124 PetriNetUnfolderBase]: 17394/26964 cut-off events. [2024-01-31 17:01:43,985 INFO L125 PetriNetUnfolderBase]: For 37202/38664 co-relation queries the response was YES. [2024-01-31 17:01:44,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82356 conditions, 26964 events. 17394/26964 cut-off events. For 37202/38664 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 199577 event pairs, 3746 based on Foata normal form. 372/26504 useless extension candidates. Maximal degree in co-relation 23567. Up to 9522 conditions per place. [2024-01-31 17:01:44,194 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 110 selfloop transitions, 83 changer transitions 2/215 dead transitions. [2024-01-31 17:01:44,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 215 transitions, 1429 flow [2024-01-31 17:01:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:01:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:01:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-01-31 17:01:44,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 17:01:44,196 INFO L175 Difference]: Start difference. First operand has 70 places, 118 transitions, 672 flow. Second operand 6 states and 216 transitions. [2024-01-31 17:01:44,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 215 transitions, 1429 flow [2024-01-31 17:01:44,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 215 transitions, 1412 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-31 17:01:44,255 INFO L231 Difference]: Finished difference. Result has 76 places, 143 transitions, 1064 flow [2024-01-31 17:01:44,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1064, PETRI_PLACES=76, PETRI_TRANSITIONS=143} [2024-01-31 17:01:44,258 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-01-31 17:01:44,258 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 143 transitions, 1064 flow [2024-01-31 17:01:44,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:44,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:44,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:44,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:01:44,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:44,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1982229061, now seen corresponding path program 7 times [2024-01-31 17:01:44,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:44,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449710352] [2024-01-31 17:01:44,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:44,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:44,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:44,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449710352] [2024-01-31 17:01:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449710352] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:44,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:44,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534649534] [2024-01-31 17:01:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:44,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:01:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:01:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:01:44,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:44,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 143 transitions, 1064 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:44,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:44,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:44,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:46,233 INFO L124 PetriNetUnfolderBase]: 17516/27489 cut-off events. [2024-01-31 17:01:46,233 INFO L125 PetriNetUnfolderBase]: For 66465/67651 co-relation queries the response was YES. [2024-01-31 17:01:46,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93078 conditions, 27489 events. 17516/27489 cut-off events. For 66465/67651 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 204837 event pairs, 4748 based on Foata normal form. 480/27547 useless extension candidates. Maximal degree in co-relation 24789. Up to 12055 conditions per place. [2024-01-31 17:01:46,458 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 126 selfloop transitions, 64 changer transitions 0/210 dead transitions. [2024-01-31 17:01:46,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 210 transitions, 1721 flow [2024-01-31 17:01:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:01:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:01:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-01-31 17:01:46,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-01-31 17:01:46,460 INFO L175 Difference]: Start difference. First operand has 76 places, 143 transitions, 1064 flow. Second operand 5 states and 175 transitions. [2024-01-31 17:01:46,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 210 transitions, 1721 flow [2024-01-31 17:01:46,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 210 transitions, 1703 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 17:01:46,589 INFO L231 Difference]: Finished difference. Result has 81 places, 153 transitions, 1340 flow [2024-01-31 17:01:46,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1340, PETRI_PLACES=81, PETRI_TRANSITIONS=153} [2024-01-31 17:01:46,590 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-01-31 17:01:46,590 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 153 transitions, 1340 flow [2024-01-31 17:01:46,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:46,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:46,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:46,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:01:46,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:46,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2105691893, now seen corresponding path program 8 times [2024-01-31 17:01:46,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:46,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285340907] [2024-01-31 17:01:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:46,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:46,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285340907] [2024-01-31 17:01:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285340907] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:46,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:46,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:01:46,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479980188] [2024-01-31 17:01:46,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:46,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:01:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:46,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:01:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:01:46,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:46,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 153 transitions, 1340 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:46,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:46,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:46,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:48,428 INFO L124 PetriNetUnfolderBase]: 17582/27472 cut-off events. [2024-01-31 17:01:48,428 INFO L125 PetriNetUnfolderBase]: For 91494/93144 co-relation queries the response was YES. [2024-01-31 17:01:48,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101312 conditions, 27472 events. 17582/27472 cut-off events. For 91494/93144 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 204881 event pairs, 3677 based on Foata normal form. 652/27408 useless extension candidates. Maximal degree in co-relation 31120. Up to 9510 conditions per place. [2024-01-31 17:01:48,644 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 102 selfloop transitions, 114 changer transitions 1/237 dead transitions. [2024-01-31 17:01:48,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 237 transitions, 2091 flow [2024-01-31 17:01:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:01:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:01:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-31 17:01:48,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2024-01-31 17:01:48,647 INFO L175 Difference]: Start difference. First operand has 81 places, 153 transitions, 1340 flow. Second operand 7 states and 235 transitions. [2024-01-31 17:01:48,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 237 transitions, 2091 flow [2024-01-31 17:01:48,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 237 transitions, 1986 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-31 17:01:48,761 INFO L231 Difference]: Finished difference. Result has 85 places, 161 transitions, 1605 flow [2024-01-31 17:01:48,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1605, PETRI_PLACES=85, PETRI_TRANSITIONS=161} [2024-01-31 17:01:48,761 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-01-31 17:01:48,762 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 161 transitions, 1605 flow [2024-01-31 17:01:48,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:48,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:48,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:48,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:01:48,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:48,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1059510583, now seen corresponding path program 9 times [2024-01-31 17:01:48,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400179128] [2024-01-31 17:01:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:48,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400179128] [2024-01-31 17:01:48,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400179128] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:48,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:48,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728678966] [2024-01-31 17:01:48,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:48,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:01:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:48,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:01:48,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:01:48,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:48,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 161 transitions, 1605 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:48,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:48,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:48,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:50,460 INFO L124 PetriNetUnfolderBase]: 17118/27103 cut-off events. [2024-01-31 17:01:50,460 INFO L125 PetriNetUnfolderBase]: For 107223/108503 co-relation queries the response was YES. [2024-01-31 17:01:50,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102821 conditions, 27103 events. 17118/27103 cut-off events. For 107223/108503 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 206210 event pairs, 4786 based on Foata normal form. 564/27096 useless extension candidates. Maximal degree in co-relation 25024. Up to 11813 conditions per place. [2024-01-31 17:01:50,671 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 124 selfloop transitions, 82 changer transitions 5/231 dead transitions. [2024-01-31 17:01:50,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 231 transitions, 2397 flow [2024-01-31 17:01:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:01:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:01:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-01-31 17:01:50,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-01-31 17:01:50,673 INFO L175 Difference]: Start difference. First operand has 85 places, 161 transitions, 1605 flow. Second operand 5 states and 177 transitions. [2024-01-31 17:01:50,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 231 transitions, 2397 flow [2024-01-31 17:01:50,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 231 transitions, 2196 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:01:50,793 INFO L231 Difference]: Finished difference. Result has 87 places, 172 transitions, 1807 flow [2024-01-31 17:01:50,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1807, PETRI_PLACES=87, PETRI_TRANSITIONS=172} [2024-01-31 17:01:50,809 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-01-31 17:01:50,809 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 172 transitions, 1807 flow [2024-01-31 17:01:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:50,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:50,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:50,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:01:50,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:50,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1641910543, now seen corresponding path program 10 times [2024-01-31 17:01:50,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:50,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175735720] [2024-01-31 17:01:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:50,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:50,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:50,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175735720] [2024-01-31 17:01:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175735720] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:50,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:50,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667943301] [2024-01-31 17:01:50,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:01:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:50,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:01:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:01:50,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:50,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 172 transitions, 1807 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:50,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:50,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:50,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:52,326 INFO L124 PetriNetUnfolderBase]: 11286/18186 cut-off events. [2024-01-31 17:01:52,327 INFO L125 PetriNetUnfolderBase]: For 71834/73190 co-relation queries the response was YES. [2024-01-31 17:01:52,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67860 conditions, 18186 events. 11286/18186 cut-off events. For 71834/73190 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 130832 event pairs, 2818 based on Foata normal form. 1096/19010 useless extension candidates. Maximal degree in co-relation 17005. Up to 8585 conditions per place. [2024-01-31 17:01:52,445 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 119 selfloop transitions, 86 changer transitions 0/221 dead transitions. [2024-01-31 17:01:52,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 221 transitions, 2419 flow [2024-01-31 17:01:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:01:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:01:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-01-31 17:01:52,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-01-31 17:01:52,447 INFO L175 Difference]: Start difference. First operand has 87 places, 172 transitions, 1807 flow. Second operand 5 states and 171 transitions. [2024-01-31 17:01:52,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 221 transitions, 2419 flow [2024-01-31 17:01:52,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 221 transitions, 2315 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 17:01:52,522 INFO L231 Difference]: Finished difference. Result has 88 places, 173 transitions, 2001 flow [2024-01-31 17:01:52,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2001, PETRI_PLACES=88, PETRI_TRANSITIONS=173} [2024-01-31 17:01:52,522 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2024-01-31 17:01:52,522 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 173 transitions, 2001 flow [2024-01-31 17:01:52,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:52,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:52,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:52,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:01:52,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:52,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1777388555, now seen corresponding path program 11 times [2024-01-31 17:01:52,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:52,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047157228] [2024-01-31 17:01:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:52,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047157228] [2024-01-31 17:01:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047157228] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:52,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:01:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771100682] [2024-01-31 17:01:52,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:52,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:01:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:01:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:01:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:52,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 173 transitions, 2001 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:52,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:52,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:52,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:53,861 INFO L124 PetriNetUnfolderBase]: 11299/18164 cut-off events. [2024-01-31 17:01:53,862 INFO L125 PetriNetUnfolderBase]: For 77462/78579 co-relation queries the response was YES. [2024-01-31 17:01:53,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69454 conditions, 18164 events. 11299/18164 cut-off events. For 77462/78579 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 130929 event pairs, 2321 based on Foata normal form. 624/18290 useless extension candidates. Maximal degree in co-relation 19703. Up to 5821 conditions per place. [2024-01-31 17:01:53,983 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 111 selfloop transitions, 121 changer transitions 2/250 dead transitions. [2024-01-31 17:01:53,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 250 transitions, 2803 flow [2024-01-31 17:01:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:01:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:01:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-31 17:01:53,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-01-31 17:01:53,987 INFO L175 Difference]: Start difference. First operand has 88 places, 173 transitions, 2001 flow. Second operand 6 states and 213 transitions. [2024-01-31 17:01:53,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 250 transitions, 2803 flow [2024-01-31 17:01:54,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 250 transitions, 2706 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:01:54,044 INFO L231 Difference]: Finished difference. Result has 92 places, 177 transitions, 2259 flow [2024-01-31 17:01:54,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2259, PETRI_PLACES=92, PETRI_TRANSITIONS=177} [2024-01-31 17:01:54,045 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-01-31 17:01:54,045 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 177 transitions, 2259 flow [2024-01-31 17:01:54,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:54,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:54,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:54,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:01:54,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:54,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:54,047 INFO L85 PathProgramCache]: Analyzing trace with hash -915820361, now seen corresponding path program 12 times [2024-01-31 17:01:54,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:54,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306385603] [2024-01-31 17:01:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306385603] [2024-01-31 17:01:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306385603] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:01:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92311076] [2024-01-31 17:01:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:01:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:01:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:01:54,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:54,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 177 transitions, 2259 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:54,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:54,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:54,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:55,690 INFO L124 PetriNetUnfolderBase]: 11509/18608 cut-off events. [2024-01-31 17:01:55,691 INFO L125 PetriNetUnfolderBase]: For 96744/97752 co-relation queries the response was YES. [2024-01-31 17:01:55,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74657 conditions, 18608 events. 11509/18608 cut-off events. For 96744/97752 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 135815 event pairs, 2369 based on Foata normal form. 635/18735 useless extension candidates. Maximal degree in co-relation 21873. Up to 5821 conditions per place. [2024-01-31 17:01:55,832 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 131 selfloop transitions, 130 changer transitions 1/278 dead transitions. [2024-01-31 17:01:55,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 278 transitions, 3265 flow [2024-01-31 17:01:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:01:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:01:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2024-01-31 17:01:55,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7057291666666666 [2024-01-31 17:01:55,834 INFO L175 Difference]: Start difference. First operand has 92 places, 177 transitions, 2259 flow. Second operand 8 states and 271 transitions. [2024-01-31 17:01:55,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 278 transitions, 3265 flow [2024-01-31 17:01:55,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 278 transitions, 3039 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-31 17:01:55,898 INFO L231 Difference]: Finished difference. Result has 96 places, 186 transitions, 2504 flow [2024-01-31 17:01:55,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2504, PETRI_PLACES=96, PETRI_TRANSITIONS=186} [2024-01-31 17:01:55,899 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-01-31 17:01:55,899 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 186 transitions, 2504 flow [2024-01-31 17:01:55,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:55,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:55,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:55,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:01:55,900 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:55,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash -460386573, now seen corresponding path program 13 times [2024-01-31 17:01:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:55,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387404500] [2024-01-31 17:01:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387404500] [2024-01-31 17:01:55,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387404500] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:55,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:55,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:01:55,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511157129] [2024-01-31 17:01:55,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:55,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:01:55,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:55,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:01:55,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:01:55,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:55,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 186 transitions, 2504 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:55,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:55,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:55,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:57,287 INFO L124 PetriNetUnfolderBase]: 11214/18433 cut-off events. [2024-01-31 17:01:57,287 INFO L125 PetriNetUnfolderBase]: For 96538/97334 co-relation queries the response was YES. [2024-01-31 17:01:57,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73869 conditions, 18433 events. 11214/18433 cut-off events. For 96538/97334 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 137147 event pairs, 2309 based on Foata normal form. 736/18697 useless extension candidates. Maximal degree in co-relation 20944. Up to 5788 conditions per place. [2024-01-31 17:01:57,446 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 130 selfloop transitions, 136 changer transitions 16/298 dead transitions. [2024-01-31 17:01:57,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 298 transitions, 3680 flow [2024-01-31 17:01:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:01:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:01:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-01-31 17:01:57,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-01-31 17:01:57,448 INFO L175 Difference]: Start difference. First operand has 96 places, 186 transitions, 2504 flow. Second operand 8 states and 277 transitions. [2024-01-31 17:01:57,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 298 transitions, 3680 flow [2024-01-31 17:01:57,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 298 transitions, 3497 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 17:01:57,538 INFO L231 Difference]: Finished difference. Result has 102 places, 192 transitions, 2733 flow [2024-01-31 17:01:57,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2733, PETRI_PLACES=102, PETRI_TRANSITIONS=192} [2024-01-31 17:01:57,539 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-01-31 17:01:57,540 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 192 transitions, 2733 flow [2024-01-31 17:01:57,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:57,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:57,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:57,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:01:57,540 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:57,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:57,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1304993953, now seen corresponding path program 14 times [2024-01-31 17:01:57,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:57,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434327705] [2024-01-31 17:01:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:57,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434327705] [2024-01-31 17:01:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434327705] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:57,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:57,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:01:57,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280310016] [2024-01-31 17:01:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:01:57,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:01:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:01:57,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:57,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 192 transitions, 2733 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:57,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:57,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:57,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:58,769 INFO L124 PetriNetUnfolderBase]: 8236/13739 cut-off events. [2024-01-31 17:01:58,770 INFO L125 PetriNetUnfolderBase]: For 69599/70051 co-relation queries the response was YES. [2024-01-31 17:01:58,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56943 conditions, 13739 events. 8236/13739 cut-off events. For 69599/70051 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 98332 event pairs, 1758 based on Foata normal form. 706/14224 useless extension candidates. Maximal degree in co-relation 16704. Up to 3984 conditions per place. [2024-01-31 17:01:58,849 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 117 selfloop transitions, 132 changer transitions 32/297 dead transitions. [2024-01-31 17:01:58,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 297 transitions, 4023 flow [2024-01-31 17:01:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:01:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:01:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-01-31 17:01:58,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-01-31 17:01:58,851 INFO L175 Difference]: Start difference. First operand has 102 places, 192 transitions, 2733 flow. Second operand 8 states and 266 transitions. [2024-01-31 17:01:58,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 297 transitions, 4023 flow [2024-01-31 17:01:58,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 297 transitions, 3768 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 17:01:58,910 INFO L231 Difference]: Finished difference. Result has 106 places, 186 transitions, 2744 flow [2024-01-31 17:01:58,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2744, PETRI_PLACES=106, PETRI_TRANSITIONS=186} [2024-01-31 17:01:58,911 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-01-31 17:01:58,911 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 186 transitions, 2744 flow [2024-01-31 17:01:58,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:58,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:58,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:58,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 17:01:58,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:01:58,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1732165137, now seen corresponding path program 15 times [2024-01-31 17:01:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:58,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162599525] [2024-01-31 17:01:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:58,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:58,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162599525] [2024-01-31 17:01:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162599525] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:58,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:58,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:01:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535921361] [2024-01-31 17:01:58,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:01:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:01:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:01:58,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:01:58,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 186 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:58,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:58,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:01:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:00,166 INFO L124 PetriNetUnfolderBase]: 7154/11919 cut-off events. [2024-01-31 17:02:00,166 INFO L125 PetriNetUnfolderBase]: For 69006/69312 co-relation queries the response was YES. [2024-01-31 17:02:00,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49250 conditions, 11919 events. 7154/11919 cut-off events. For 69006/69312 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 83762 event pairs, 1640 based on Foata normal form. 352/12052 useless extension candidates. Maximal degree in co-relation 16901. Up to 4130 conditions per place. [2024-01-31 17:02:00,245 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 104 selfloop transitions, 132 changer transitions 31/283 dead transitions. [2024-01-31 17:02:00,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 283 transitions, 3810 flow [2024-01-31 17:02:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:02:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:02:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-01-31 17:02:00,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-01-31 17:02:00,247 INFO L175 Difference]: Start difference. First operand has 106 places, 186 transitions, 2744 flow. Second operand 9 states and 279 transitions. [2024-01-31 17:02:00,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 283 transitions, 3810 flow [2024-01-31 17:02:00,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 283 transitions, 3689 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 17:02:00,312 INFO L231 Difference]: Finished difference. Result has 112 places, 175 transitions, 2689 flow [2024-01-31 17:02:00,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2689, PETRI_PLACES=112, PETRI_TRANSITIONS=175} [2024-01-31 17:02:00,314 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-01-31 17:02:00,314 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 175 transitions, 2689 flow [2024-01-31 17:02:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:00,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:00,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 17:02:00,315 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:02:00,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash -779429233, now seen corresponding path program 16 times [2024-01-31 17:02:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:00,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476094444] [2024-01-31 17:02:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:00,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476094444] [2024-01-31 17:02:00,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476094444] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:00,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:02:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599245788] [2024-01-31 17:02:00,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:02:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:02:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:02:00,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:02:00,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 175 transitions, 2689 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:00,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:00,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:02:00,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:01,576 INFO L124 PetriNetUnfolderBase]: 6588/11001 cut-off events. [2024-01-31 17:02:01,576 INFO L125 PetriNetUnfolderBase]: For 74616/75034 co-relation queries the response was YES. [2024-01-31 17:02:01,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46558 conditions, 11001 events. 6588/11001 cut-off events. For 74616/75034 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 76283 event pairs, 1630 based on Foata normal form. 368/11158 useless extension candidates. Maximal degree in co-relation 15418. Up to 3844 conditions per place. [2024-01-31 17:02:01,659 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 116 selfloop transitions, 135 changer transitions 18/285 dead transitions. [2024-01-31 17:02:01,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 285 transitions, 3801 flow [2024-01-31 17:02:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:02:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:02:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 344 transitions. [2024-01-31 17:02:01,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-01-31 17:02:01,662 INFO L175 Difference]: Start difference. First operand has 112 places, 175 transitions, 2689 flow. Second operand 12 states and 344 transitions. [2024-01-31 17:02:01,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 285 transitions, 3801 flow [2024-01-31 17:02:01,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 285 transitions, 3502 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-01-31 17:02:01,747 INFO L231 Difference]: Finished difference. Result has 119 places, 178 transitions, 2690 flow [2024-01-31 17:02:01,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2690, PETRI_PLACES=119, PETRI_TRANSITIONS=178} [2024-01-31 17:02:01,748 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-01-31 17:02:01,748 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 178 transitions, 2690 flow [2024-01-31 17:02:01,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:01,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:01,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:01,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 17:02:01,749 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:02:01,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 624737755, now seen corresponding path program 17 times [2024-01-31 17:02:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871090243] [2024-01-31 17:02:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:01,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871090243] [2024-01-31 17:02:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871090243] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:01,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:01,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:02:01,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850663164] [2024-01-31 17:02:01,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:01,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:02:01,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:02:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:02:01,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:02:01,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 178 transitions, 2690 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:01,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:01,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:02:01,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:03,011 INFO L124 PetriNetUnfolderBase]: 6594/11069 cut-off events. [2024-01-31 17:02:03,012 INFO L125 PetriNetUnfolderBase]: For 78243/78531 co-relation queries the response was YES. [2024-01-31 17:02:03,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47017 conditions, 11069 events. 6594/11069 cut-off events. For 78243/78531 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 77533 event pairs, 1712 based on Foata normal form. 270/11156 useless extension candidates. Maximal degree in co-relation 15657. Up to 3890 conditions per place. [2024-01-31 17:02:03,086 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 99 selfloop transitions, 125 changer transitions 48/288 dead transitions. [2024-01-31 17:02:03,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 288 transitions, 3817 flow [2024-01-31 17:02:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:02:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:02:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 345 transitions. [2024-01-31 17:02:03,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-01-31 17:02:03,088 INFO L175 Difference]: Start difference. First operand has 119 places, 178 transitions, 2690 flow. Second operand 12 states and 345 transitions. [2024-01-31 17:02:03,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 288 transitions, 3817 flow [2024-01-31 17:02:03,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 288 transitions, 3628 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 17:02:03,173 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 2578 flow [2024-01-31 17:02:03,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2578, PETRI_PLACES=125, PETRI_TRANSITIONS=168} [2024-01-31 17:02:03,174 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-01-31 17:02:03,174 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 2578 flow [2024-01-31 17:02:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:03,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:03,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 17:02:03,175 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:02:03,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1384727863, now seen corresponding path program 18 times [2024-01-31 17:02:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472554663] [2024-01-31 17:02:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:03,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472554663] [2024-01-31 17:02:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472554663] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:03,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:03,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:02:03,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527220660] [2024-01-31 17:02:03,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:02:03,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:02:03,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:02:03,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:02:03,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 168 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:03,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:03,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:02:03,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:04,447 INFO L124 PetriNetUnfolderBase]: 6332/10605 cut-off events. [2024-01-31 17:02:04,447 INFO L125 PetriNetUnfolderBase]: For 83287/83733 co-relation queries the response was YES. [2024-01-31 17:02:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46132 conditions, 10605 events. 6332/10605 cut-off events. For 83287/83733 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73599 event pairs, 1626 based on Foata normal form. 382/10814 useless extension candidates. Maximal degree in co-relation 17878. Up to 3796 conditions per place. [2024-01-31 17:02:04,531 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 109 selfloop transitions, 124 changer transitions 32/280 dead transitions. [2024-01-31 17:02:04,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 280 transitions, 3715 flow [2024-01-31 17:02:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:02:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:02:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 346 transitions. [2024-01-31 17:02:04,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006944444444444 [2024-01-31 17:02:04,535 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 2578 flow. Second operand 12 states and 346 transitions. [2024-01-31 17:02:04,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 280 transitions, 3715 flow [2024-01-31 17:02:04,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 280 transitions, 3425 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-01-31 17:02:04,618 INFO L231 Difference]: Finished difference. Result has 126 places, 165 transitions, 2491 flow [2024-01-31 17:02:04,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2491, PETRI_PLACES=126, PETRI_TRANSITIONS=165} [2024-01-31 17:02:04,619 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-01-31 17:02:04,619 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 165 transitions, 2491 flow [2024-01-31 17:02:04,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:04,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:04,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 17:02:04,623 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:02:04,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash -248312015, now seen corresponding path program 19 times [2024-01-31 17:02:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830523898] [2024-01-31 17:02:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:04,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:04,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830523898] [2024-01-31 17:02:04,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830523898] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:04,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:04,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:02:04,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345236542] [2024-01-31 17:02:04,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:02:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:02:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:02:04,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:02:04,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 165 transitions, 2491 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:04,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:04,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:02:04,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:05,059 INFO L124 PetriNetUnfolderBase]: 1396/2560 cut-off events. [2024-01-31 17:02:05,060 INFO L125 PetriNetUnfolderBase]: For 15834/15858 co-relation queries the response was YES. [2024-01-31 17:02:05,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11528 conditions, 2560 events. 1396/2560 cut-off events. For 15834/15858 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14315 event pairs, 282 based on Foata normal form. 248/2797 useless extension candidates. Maximal degree in co-relation 6070. Up to 561 conditions per place. [2024-01-31 17:02:05,072 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 58 selfloop transitions, 24 changer transitions 54/149 dead transitions. [2024-01-31 17:02:05,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 1936 flow [2024-01-31 17:02:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:02:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:02:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-01-31 17:02:05,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-01-31 17:02:05,073 INFO L175 Difference]: Start difference. First operand has 126 places, 165 transitions, 2491 flow. Second operand 8 states and 219 transitions. [2024-01-31 17:02:05,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 1936 flow [2024-01-31 17:02:05,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 149 transitions, 1770 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-01-31 17:02:05,091 INFO L231 Difference]: Finished difference. Result has 122 places, 65 transitions, 604 flow [2024-01-31 17:02:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=122, PETRI_TRANSITIONS=65} [2024-01-31 17:02:05,092 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-01-31 17:02:05,092 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 65 transitions, 604 flow [2024-01-31 17:02:05,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:05,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 17:02:05,093 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:02:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -129561899, now seen corresponding path program 20 times [2024-01-31 17:02:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720316256] [2024-01-31 17:02:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:05,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720316256] [2024-01-31 17:02:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720316256] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:05,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:05,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:02:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873589408] [2024-01-31 17:02:05,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:05,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:02:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:02:05,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 17:02:05,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:02:05,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 65 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:05,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:02:05,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:05,343 INFO L124 PetriNetUnfolderBase]: 458/852 cut-off events. [2024-01-31 17:02:05,343 INFO L125 PetriNetUnfolderBase]: For 3510/3518 co-relation queries the response was YES. [2024-01-31 17:02:05,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 852 events. 458/852 cut-off events. For 3510/3518 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3436 event pairs, 68 based on Foata normal form. 40/886 useless extension candidates. Maximal degree in co-relation 2021. Up to 201 conditions per place. [2024-01-31 17:02:05,346 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 50 selfloop transitions, 16 changer transitions 14/93 dead transitions. [2024-01-31 17:02:05,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 93 transitions, 848 flow [2024-01-31 17:02:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 17:02:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 17:02:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-01-31 17:02:05,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-01-31 17:02:05,348 INFO L175 Difference]: Start difference. First operand has 122 places, 65 transitions, 604 flow. Second operand 8 states and 190 transitions. [2024-01-31 17:02:05,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 93 transitions, 848 flow [2024-01-31 17:02:05,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 574 flow, removed 36 selfloop flow, removed 33 redundant places. [2024-01-31 17:02:05,352 INFO L231 Difference]: Finished difference. Result has 86 places, 53 transitions, 278 flow [2024-01-31 17:02:05,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=86, PETRI_TRANSITIONS=53} [2024-01-31 17:02:05,352 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-01-31 17:02:05,352 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 53 transitions, 278 flow [2024-01-31 17:02:05,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:05,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:02:05,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:02:05,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 17:02:05,353 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:02:05,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:02:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash 421802057, now seen corresponding path program 21 times [2024-01-31 17:02:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:02:05,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582632263] [2024-01-31 17:02:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:02:05,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:02:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:02:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:02:05,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:02:05,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582632263] [2024-01-31 17:02:05,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582632263] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:02:05,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:02:05,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:02:05,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345703362] [2024-01-31 17:02:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:02:05,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:02:05,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:02:05,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:02:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:02:05,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-31 17:02:05,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 53 transitions, 278 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:05,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:02:05,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-31 17:02:05,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:02:05,535 INFO L124 PetriNetUnfolderBase]: 68/171 cut-off events. [2024-01-31 17:02:05,535 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-01-31 17:02:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 171 events. 68/171 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 501 event pairs, 8 based on Foata normal form. 16/185 useless extension candidates. Maximal degree in co-relation 583. Up to 40 conditions per place. [2024-01-31 17:02:05,536 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2024-01-31 17:02:05,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 52 transitions, 345 flow [2024-01-31 17:02:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:02:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:02:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-01-31 17:02:05,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912037037037037 [2024-01-31 17:02:05,537 INFO L175 Difference]: Start difference. First operand has 86 places, 53 transitions, 278 flow. Second operand 9 states and 169 transitions. [2024-01-31 17:02:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 52 transitions, 345 flow [2024-01-31 17:02:05,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 267 flow, removed 2 selfloop flow, removed 20 redundant places. [2024-01-31 17:02:05,538 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-01-31 17:02:05,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-01-31 17:02:05,539 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-01-31 17:02:05,539 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-01-31 17:02:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:02:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-01-31 17:02:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-01-31 17:02:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-31 17:02:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-31 17:02:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-01-31 17:02:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 17:02:05,544 INFO L445 BasicCegarLoop]: Path program histogram: [21] [2024-01-31 17:02:05,547 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:02:05,547 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:02:05,550 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:02:05 BasicIcfg [2024-01-31 17:02:05,551 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:02:05,551 INFO L158 Benchmark]: Toolchain (without parser) took 34136.02ms. Allocated memory was 155.2MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 111.8MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2024-01-31 17:02:05,551 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:02:05,551 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:02:05,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.04ms. Allocated memory is still 155.2MB. Free memory was 111.8MB in the beginning and 96.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-01-31 17:02:05,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.12ms. Allocated memory is still 155.2MB. Free memory was 96.2MB in the beginning and 93.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:02:05,552 INFO L158 Benchmark]: Boogie Preprocessor took 38.26ms. Allocated memory is still 155.2MB. Free memory was 93.9MB in the beginning and 90.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 17:02:05,552 INFO L158 Benchmark]: RCFGBuilder took 729.72ms. Allocated memory is still 155.2MB. Free memory was 90.8MB in the beginning and 78.4MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-31 17:02:05,553 INFO L158 Benchmark]: TraceAbstraction took 33041.14ms. Allocated memory was 155.2MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 78.4MB in the beginning and 3.0GB in the end (delta: -3.0GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2024-01-31 17:02:05,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.04ms. Allocated memory is still 155.2MB. Free memory was 111.8MB in the beginning and 96.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.12ms. Allocated memory is still 155.2MB. Free memory was 96.2MB in the beginning and 93.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.26ms. Allocated memory is still 155.2MB. Free memory was 93.9MB in the beginning and 90.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 729.72ms. Allocated memory is still 155.2MB. Free memory was 90.8MB in the beginning and 78.4MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 33041.14ms. Allocated memory was 155.2MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 78.4MB in the beginning and 3.0GB in the end (delta: -3.0GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.9s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1542 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1538 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 387 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6410 IncrementalHoareTripleChecker+Invalid, 6797 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 387 mSolverCounterUnsat, 5 mSDtfsCounter, 6410 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2744occurred in iteration=14, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 903 NumberOfCodeBlocks, 903 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 882 ConstructedInterpolants, 0 QuantifiedInterpolants, 3025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 17:02:05,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE